长江下游河段大型挖入式港池泥沙回淤研究  

Research on siltation in large excavated-in harbor basin of lower Yangtze River

作　　者：周巧菊 赵雪荣 

机构地区：[1]中交第二航务工程勘察设计院有限公司南京分公司,南京210016

出　　处：《水道港口》2015年第3期214-219,263,共7页Journal of Waterway and Harbor

摘　　要：在分析感潮河段挖入式港池泥沙淤积机理的基础上,对回流淤积、异重流淤积量及缓流淤积量的计算方法进行了研究,并对长江下游某大型挖入式港池规划方案的淤积量及淤积强度进行了估算。计算结果表明挖入式港池内以异重流淤积为主,港池口门附近的回流区淤积强度最大。文中还对挖入式港池淤积量与港池内水深变化、港池水域面积变化及来水来沙条件变化的相关性进行了总结,得出了一些规律性的结论。Based on analysis of the siltation mechanism in excavated-in harbor basin of the tidal reach, themethod for calculating the siltation amount induced by circulating flow, density flow and the wave rise and fall wasdiscussed in this paper. The amount and intensity of siltation for a planning project of a large excavated-in harborbasin in the lower reaches of the Yangtze River was also estimated. The calculation results show that siltation of den-sity flow is a major part of the total amount of siltation,whereas the circulating flow zone of the entrance of excavated-in harbor basin has the largest siltation intensity. This paper gets some universal conclusions by summarizing thecorrelation relationships between the siltation amount and harbor water depth, harbor water area, as well as the char-acteristic of incoming flow and sediment.

关 键 词：感潮河段 大型挖入式港池 回淤研究 长江下游 

分 类 号：TV142[水利工程—水力学及河流动力学] O242.1[理学—计算数学]